JAVA学习笔记3--JSP首页设计

<%@ page language="java" contentType="text/html; charset=GBK"%>
<%
  String path = request.getContextPath();<!-- 获得上下文路径-->
  String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";<!--设置页面基础路径,应用在base标记中-->

  String mainPage=(String)request.getAttribute("mainPage");
  if(mainPage==null||mainPage.equals(""))
	  mainPage="default.jsp";<!--动态显示内容页面-->
%>

<html>
<head>
  <title>首页</title>
  <base href="<%=basePath%>"><!--定义页面的基本路径-->
  <link type="text/css" rel="stylesheet" href="css/style.css">
</head>
<body background="images/back.gif">
    <center>
        <table border="0" width="920" cellspacing="0" cellpadding="0" bgcolor="white">
            <tr><td colspan="2"><jsp:include page="top.jsp"/></td></tr>
            <tr>
                <td width="230" valign="top" align="center"><jsp:include page="left.jsp"/></td>
                <td width="690" height="400" align="center" valign="top" bgcolor="#FFFFFF"><jsp:include page="<%=mainPage%>"/></td>
            </tr>
            <tr><td colspan="2"><%@ include file="end.jsp" %></td></tr>
        </table>        
    </center>
</body>
</html>

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